Early Boxster brakes in a 3.2 Carrera

[cibergypsy]

Hello,

Does anyone know who sells the adapters, proportioning valve (if needed), lines etc. - minus the calipers themselves - in order to upgrade the brakes on my 87 Carrera take the calipers from an early Boxster 2.5L? I read about this on various British magazines and one gets to keep the front rotors of the Carreras but needs to change the rears to those of an SC. Sounds like a good upgrade, specially if one wants to have more power by increasing displacement or by other methods, so that the car can cope and brake as it should.

Thanks for the info. if found.

[ofishbein]

TRE Motorsports in Van Nuys, CA has an answer for this. I'm not sure if they sell the kits or just perform the work, but I know they do a Boxster brake conversion.

[Diamond Blue]

You gain very little if any improvement going this route. The brakes on the Carrera are very good. Upgrading brakes is normally done if you are over heating your brakes on the track. If that is the case there are numerous things to do to keep them cool without doing a brake upgrade. Air ducts and different brake fluid choice. Also brake fluid should be flushed once a year unless you are racing then more often.I have been to the track several times when it has been hot and not had any problems with my brakes. If you can lock them up then you are not gaining anything by upgrading. Most gains are made going to larger rotors for better heat dissapation.

I have rebuilt my engine with 3.4 P&C's and a DC22 cam from DR camshafts putting out 265hp up from stock 217. No problems with the brakes.

Edited February 25, 2010 by Diamond Blue

[cibergypsy]

You gain very little if any improvement going this route. The brakes on the Carrera are very good. Upgrading brakes is normally done if you are over heating your brakes on the track. If that is the case there are numerous things to do to keep them cool without doing a brake upgrade. Air ducts and different brake fluid choice. Also brake fluid should be flushed once a year unless you are racing then more often.I have been to the track several times when it has been hot and not had any problems with my brakes. If you can lock them up then you are not gaining anything by upgrading. Most gains are made going to larger rotors for better heat dissapation.

I have rebuilt my engine with 3.4 P&C's and a DC22 cam from DR camshafts putting out 265hp up from stock 217. No problems with the brakes.

Thanks for the info as this will surely save me some $$$. I think I'll try the brake ducts sold at Automotion... have you seen them and, if so, what is your opinion on them? Thanks again.

When you got your displacement increase and different camshaft, who programmed you the chip?

[Diamond Blue]

Steve Wong at 911chips.com. IMHO he is the best there is with chip tuning on the 911. I have had a couple of changes and the car is great. Have been using an LM-2 to tune and need to get to a dyno this spring. Dynolicous game me a 260hp read out. Which I think the dyno will be pretty close to.

There are some inexpensive air diverters that are used on the 993 which appear to work really well and are not much money especially for a P-part. I haven't seen the ones from Performance but I think I know what your talking about.

Take a look at these 993 deflectors. I am looking at doing these on mine just for some safety margin http://forums.pelicanparts.com/porsche-911-technical-forum/449804-more-brake-cooling-993-air-deflectors-option.html

Are you spending some time at the track with your car?

[MUSSBERGER]

Hello,

Does anyone know who sells the adapters, proportioning valve (if needed), lines etc. - minus the calipers themselves - in order to upgrade the brakes on my 87 Carrera take the calipers from an early Boxster 2.5L? I read about this on various British magazines and one gets to keep the front rotors of the Carreras but needs to change the rears to those of an SC. Sounds like a good upgrade, specially if one wants to have more power by increasing displacement or by other methods, so that the car can cope and brake as it should.

Thanks for the info. if found.

There is a complete set for sale on rennlist.com. go to the 911 forum.

[cibergypsy]

Mussberger, it's too bad I only found this out today! The kit has already been sold and it is exactly the one I was looking for. TRE sells it for a lot more at their website. Thanks for posting your reply, though.